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Finding the Fourth Proportional to 531,390.78, 797,241.44 and 171,553.18

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Solution

The fourth proportional to 531,390.78, 797,241.44 and 171,553.18 is: 257,379.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,390.78 : 797,241.44 = 171,553.18 : x
  2. Step 2: Convert to fraction form
    531,390.78/797,241.44 = 171,553.18/x
  3. Step 3: Cross multiply
    531,390.78x = 797,241.44 × 171,553.18
  4. Step 4: Simplify right side
    531,390.78x = 136,769,304,259.78
  5. Step 5: Solve for x
    x = 136,769,304,259.78/531,390.78
  6. Step 6: Final answer
    x = 257,379.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.